I like to assume people make mistakes instead of purposely mis lead, but it's getting harder to think that way as I get older. The biggest issue here would be almost 20 years of wear and tear as opposed to 8 or 9. As a rule of thumb figure 50 hrs of use per year, that adds up to a big difference, especially for the the engine. Your tractor looks solid. Someone cared for and respected it. You did well I believe. That tractor is a testament to the quality that was built into these low cost, high value tractors.